Improvement in trench-plow



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JOHN G. ROBINSON, OF

Letters' PatentNo. 88,414, dated March 30, 1869; autedctted March 22, i869.

SPRTNGFI'ELD, ILLINOIS.

IMPROVEMENT IN' TRENCH-PLOW.

l Q-@Ohm The Schedule referred to in these Lettera Patent and making part of the same.

the purpose of cutting the furrow-slice for the trenchplow V.

What I claim as my invention, and desire to secure by Letters Patent, is

The attaching this stationary coulter to the heel of the sod-plow, extended downward and sloping hackward, for cutting the furrow-slice of the trench-plow, in the manner described.

-Witnesses GEO. O. MARCY, J. H. GHENY.

JOHN G. ROBINSON. 

